It's the hottest day of the year so far, with thermometers hitting 34 degrees centigrade in some parts of Britain. But how to keep cool? Well, the savvy sartorialist will have picked out a stylish, airy outfit, but is there anything more we can do?

To answer the question, we slavishly took to Instagram and looked through our favourite follows to see if there's anything we can learn. Here are our findings.